128884880

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22691}}^1$

素因数の和:22775

約数の個数: 40

約数和(自身を含む): 303891264

約数和(自身を除く): 175006384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 22691, 45382, 90764, 113455, 181528, 226910, 363056, 453820, 907640, 1611061, 1815280, 3222122, 6444244, 8055305, 12888488, 16110610, 25776976, 32221220, 64442440, 128884880]

約数ペア:

[(1, 128884880), (2, 64442440), (4, 32221220), (5, 25776976), (8, 16110610), (10, 12888488), (16, 8055305), (20, 6444244), (40, 3222122), (71, 1815280), (80, 1611061), (142, 907640), (284, 453820), (355, 363056), (568, 226910), (710, 181528), (1136, 113455), (1420, 90764), (2840, 45382), (5680, 22691)]